Improvement in presses for the manufacture of artificial stone



prima didn.

LEWIs DoDeE, oE CHICAGO, I LLINoIs.

Letters Patent No. 109,397, dated November 22, 1870.

IMPRovI-:MENT IN PRESSES Foa 'rHI M AnuFAcTuRE oF ARTIFICIAL sroNE.

The Schedule referred to in these Letters Patent' and making part o! lthe same.

Be it known that I, LEWIS DODGE, of the city of Chicago, county of Cook and State of Illinois, have invented certain new and useful Improvementsin Ar- I ticial Stone Presses; and I hereby certify that the following isa full and correct description thereof, ref-V erence being had to the accompanying drawings and the letters of reference marked thereon;

Figure l-is a perspectivefview ot' press.

Figure 2 is a sectional view cut longitudinally.

Figure 3 is a view of mixingbarrel, with portion of bot-tom shown. u

I construct my press with platform AA, on which are sills B B andv C C. I

Upon sills B B I bolt bed-plates, H H, which the bases of the sides of the press.

In each side are two slots, L and K.

In slot L the ends of the dead-weight M run, and in slot K the ends of the axles of vthe mold-carriage run. I

On the1 outside of the frame', resting on Ithel bedf plates, are cogged rails, a a.

Cogged wheels, b b, play in rails a, a and give Inotion to mold-carriage.

Resting on platform and crosssill (i are bed-rails D D, with a portion horizontal and a port-ion inclined. I.

In mold-carriage E are molds f f f f, a'nd beneath the mold-carriage, resting on rollers It In, which -run on bed-rails I) D, asseen in g. 2, are followers.

I When the mold-carriage is'on that portion of bedrails marked D in iig. 2, the followers are dropped down and form the bott-om of the molds, and rise-u as'the carriage is run forward. Y

As the rollers n n raise that portion of the bed-'rails marked D, in fig. 2, the followers are raised up in the molds and push up the stone or brick until they rise to a level with top of mold-carriage.

To the dead-weight IVI are attached plungers, h II, which are made to tit molds f ff f very tightly.

Attached to top of `cleIId\veiglIt and top plate of frame is a spring, N, 'which gives power to the deadweight in falling, andadds .tothe force of' the blow n pon the material in the molds.

'A I do not confine myself to any particular kind of spring, Ybut use any kind, or apply the reciprocative power of the common steam-piston.

My carriage E runs on. rollers c e c c, which rests on the inner portion of the, bed-platesH H, and is moved forward or 'backward by mea-ns o f the-cogged .rail and wheel 4a and II.

0n the outside of the sides of the frame are bev- .eled arms or tap'pets, P, which raise 4the dead-weight thus.

By meansof a crank I turn the tappets, which meet the friction-'rollers i, attached to the ends of the dead-weight, which extend'through slots 'L L and form,

thus lift it, and when the tappets have passed far enough for the rollers t' t to `pass off the dead-weight drops with great force, driving the plungers h h It h.

Lntolhe molds f f f f, upon the Inaterial for stone or rIc At the rear end of my press I place my mixingbarrel I, as shown in gsl and 2..

In this mixing-barrel are shovels or blades similar in shape to the blades of a screw to a propeller.

'Ihese blades j j are on pendent rods, k It, attached to cross-arms, I

Above the cross-arms a: is a cogged wheel, y, with a smallereone, e, which, combined, gives mot-ion to the blades jy. i

At the bottom et mixing-barrel is a basin, R, the bottom of which has at one side tubes attached, which car'r the material from the mixing-barrel to the mo s.

The slide 1 opens and closes the mouths of the To operate my press I run the mold-carriage back to the mixing-barrel, fill the molds by drawing slide e", then run it forward until the molds are directly beneath the plungers, on dead-weight, then raise the dead-weightand drop it until the material is suf' fciently pressed, when I run the carriage forward until the rollers n, a, ascending the inclined plane, raises the followers g g g g, iig. 2, and push the stone up out of the molds.

' Having thus fully described my press and the mode of operating it, That I claim as new, and desireIto secure by Letters Patent, is-

1.V lThe combination of mold-carriage E, traveling upon level bed-rails H H, propelled by cogged wheel b, on shaft running iln slots K K, playing into cogged rail a, with the followers g g g g, provided with rollers It n, and traveling lon inclined planes D I), and the upper plungers 7th h It upon the dead weight M, operated by tappets P I,` and springsv N, when said parts are constructed, arranged and operated as and for the purpose herein described and set forth. I

f 2. Themixing-barrel I, with .blades j j, on pendent arms 7c k, attached to cross-arms x, operated by cog ged wheels y and z, and basin It, with Vtubes and slide a, when said parts are constructed, arranged, and operated as and for thepurpose herein' described andhsct'forth.

In testimony whereof, I have -sIgnea .my name to this specication in the presence of two subscribing witnesses.

Witnesses L. A. GILBERT, W. F. WHITEHOUSE.

LEvvIsDoDGE. l 

